2Z7X

Crystal structure of the TLR1-TLR2 heterodimer induced by binding of a tri-acylated lipopeptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.244 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history. 

Literature

Crystal Structure of the TLR1-TLR2 Heterodimer Induced by Binding of a Tri-Acylated Lipopeptide

Jin, M.S., Kim, S.E., Heo, J.Y., Lee, M.E., Kim, H.M., Paik, S.G., Lee, H., Lee, J.O.

(2007) Cell 130: 1071-1082

  • DOI: 10.1016/j.cell.2007.09.008
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • TLR2 in association with TLR1 or TLR6 plays an important role in the innate immune response by recognizing microbial lipoproteins and lipopeptides. Here we present the crystal structures of the human TLR1-TLR2-lipopeptide complex and of the mouse TLR ...

    TLR2 in association with TLR1 or TLR6 plays an important role in the innate immune response by recognizing microbial lipoproteins and lipopeptides. Here we present the crystal structures of the human TLR1-TLR2-lipopeptide complex and of the mouse TLR2-lipopeptide complex. Binding of the tri-acylated lipopeptide, Pam(3)CSK(4), induced the formation of an "m" shaped heterodimer of the TLR1 and TLR2 ectodomains whereas binding of the di-acylated lipopeptide, Pam(2)CSK(4), did not. The three lipid chains of Pam(3)CSK(4) mediate the heterodimerization of the receptor; the two ester-bound lipid chains are inserted into a pocket in TLR2, while the amide-bound lipid chain is inserted into a hydrophobic channel in TLR1. An extensive hydrogen-bonding network, as well as hydrophobic interactions, between TLR1 and TLR2 further stabilize the heterodimer. We propose that formation of the TLR1-TLR2 heterodimer brings the intracellular TIR domains close to each other to promote dimerization and initiate signaling.

    Organizational Affiliation: 

    Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejon, Korea 305-701.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Toll-like receptor 2, Variable lymphocyte receptor B
A
549Homo sapiensMutation(s): 0 
Gene Names: TLR2 (TIL4)
Find proteins for O60603 (Homo sapiens)
Go to Gene View: TLR2
Go to UniProtKB:  O60603
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Toll-like receptor 1, Variable lymphocyte receptor B
B
520Homo sapiensMutation(s): 0 
Gene Names: TLR1 (KIAA0012)
Find proteins for Q15399 (Homo sapiens)
Go to Gene View: TLR1
Go to UniProtKB:  Q15399
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Pam3CSK4
C
5N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PCJ
Query on PCJ
Download SDF File 
Download CCD File 
C
(2R)-3-{[(2S)-3-HYDROXY-2-(PALMITOYLAMINO)PROPYL]THIO}PROPANE-1,2-DIYL DIHEXADECANOATE
C54 H105 N O6 S
GBQDHEZHWNJSLG-OKPYTHRESA-N
 Ligand Interaction
MAN
Query on MAN
Download SDF File 
Download CCD File 
A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
BMA
Query on BMA
Download SDF File 
Download CCD File 
A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NDG
Query on NDG
Download SDF File 
Download CCD File 
A
2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE
C8 H15 N O6
OVRNDRQMDRJTHS-PVFLNQBWSA-N
 Ligand Interaction
NAG
Query on NAG
Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.244 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 200.303α = 90.00
b = 120.140β = 90.00
c = 74.120γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-10-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.2: 2017-08-16
    Type: Advisory, Refinement description, Source and taxonomy
  • Version 1.3: 2017-08-23
    Type: Source and taxonomy